Awesomplete - Ultra lightweight, usable, beautiful autocomplete

Awesomplete is an ultra lightweight, customizable, simple autocomplete widget with zero dependencies, built with modern standards for modern browsers.

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Source: leaverou.github.io

1. INCLUDE CSS AND JS FILES

<link rel="stylesheet" href="awesomplete.css" />
<script src="awesomplete.js" async></script>

2. HTML AND JS

For the autocomplete, you just need an <input> text field (might work on <textarea> and elements with contentEditable, but that hasn’t been tested). Add class="awesomplete" for it to be automatically processed (you can still specify many options via HTML attributes), otherwise you can instantiate with a few lines of JS code, which allow for more customization.

There are many ways to link an input to a list of suggestions. The simple example above could have also been made with the following markup, which provides a nice native fallback in case the script doesn’t load:

HTML:

<input class="awesomplete" list="mylist" />
<datalist id="mylist">
	<option>Ada</option>
	<option>Java</option>
	<option>JavaScript</option>
	<option>Brainfuck</option>
	<option>LOLCODE</option>
	<option>Node.js</option>
	<option>Ruby on Rails</option>
</datalist>

Or the following, if you don’t want to use a <datalist>, or if you don’t want to use IDs (since any selector will work in data-list):

HTML:

<input class="awesomplete" data-list="#mylist" />
<ul id="mylist">
	<li>Ada</li>
	<li>Java</li>
	<li>JavaScript</li>
	<li>Brainfuck</li>
	<li>LOLCODE</li>
	<li>Node.js</li>
	<li>Ruby on Rails</li>
</ul>

Or the following, if we want to instantiate in JS:

HTML:

<input id="myinput" />
<ul id="mylist">
	<li>Ada</li>
	<li>Java</li>
	<li>JavaScript</li>
	<li>Brainfuck</li>
	<li>LOLCODE</li>
	<li>Node.js</li>
	<li>Ruby on Rails</li>
</ul>

JS:

var input = document.getElementById("myinput");
new Awesomplete(input, {list: "#mylist"});

We can use an element reference for the list instead of a selector:

HTML:

<input id="myinput" />
<ul id="mylist">
	<li>Ada</li>
	<li>Java</li>
	<li>JavaScript</li>
	<li>Brainfuck</li>
	<li>LOLCODE</li>
	<li>Node.js</li>
	<li>Ruby on Rails</li>
</ul>

JS:

var input = document.getElementById("myinput");
new Awesomplete(input, {list: document.querySelector("#mylist")});

We can also directly use an array of strings:

HTML:

<input id="myinput" />

JS:

var input = document.getElementById("myinput");
new Awesomplete(input, {
	list: ["Ada", "Java", "JavaScript", "Brainfuck", "LOLCODE", "Node.js", "Ruby on Rails"]
});

We can even set it (or override it) later and it will just work:

HTML:

<input id="myinput" />

JS:

var input = document.getElementById("myinput");
var awesomplete = new Awesomplete(input);

/* ...more code... */

awesomplete.list = ["Ada", "Java", "JavaScript", "Brainfuck", "LOLCODE", "Node.js", "Ruby on

3. OPTIONS

All settings discussed in this section are settable via either a data- attribute on the <input>element or a JS property on the second argument of the Awesomplete constructor, like so:

new Awesomplete(inputReference, {
	minChars: 3,
	maxItems: 15,
	...
});

filter: function (text, input) {
	return text.indexOf(input) === 0;
}

4. EVENTS

Custom events are thrown in several places and are often cancellable. To avoid conflicts, all custom events are prefixed with awesomplete-.

5. API

There are several methods on every Awesomplete instance that you can call to customize behavior: